Why is the stool yellow instead of green or black or something?

In addition to using gastrointestinal peristalsis for digestion and absorption, the human body also relies on gastric juice and bile to help and promote the digestion of food eaten (bile mainly plays an important role in the digestion and absorption of fat).Among them the bile is golden yellow or yellowish-brown, which gives the stool a yellow color due to its influence.

The stool of healthy people is brownish-yellow, and the change of stool color is closely related to disease.

White or off-white: suggests biliary obstruction, and gallstones, biliary tract tumors, or pancreatic head cancer may be present. In addition, grayish-white stools can also be seen after barium swallow imaging, which is not a physiological stool caused by all diseases.

White washed rice samples (i.e., white, cloudy liquid in the stool that looks like rice swill) are abundant and are commonly seen in cholera.

White greasy: abundant and foul-odorous, common in pancreatic diarrhea or malabsorption syndrome.

White mucinous form: suggests chronic enteritis, intestinal polyps, and tumors.

Dark yellow: can be caused by congenital defects of red blood cells, hemolytic bacterial infection, falciparum malaria, mismatched blood transfusions, poisoning of certain chemicals or toxins, various immune reactions (including autoimmunity), etc.

Green: watery or pasty, sour, foamy, more common in indigestion, intestinal dysfunction and other diseases. If pus is mixed with green stools, it is a sign of acute enteritis or bacillary dysentery.

In addition, eating a lot of foods that contain chlorophyll, or the intestines are too acidic, can also turn the stool green.

Pale red: stool like washing water, which is most common in summer due to eating salty products contaminated with halophilic bacteria; Commonly seen in diarrhea caused by Salmonella infection.

Bright red: common with lower gastrointestinal bleeding. The outer layer is stained with blood, the amount is small, and it is accompanied by dramatic energy, and the pain disappears after defecation, which is an anal fissure; If the blood is bright red, the amount is different or there is a blood clot, attached to the outer layer of the feces, not mixed with the feces, the blood or blood clots can be washed away with water, and there is a possibility of internal hemorrhoidal bleeding.

If the blood is bright red and mixed with stool, it may be caused by intestinal polyps or rectal or colon cancer.

Dark red: Because the blood and feces are uniformly dark red, also known as jam color, it is often seen in amoebic dysentery, colon polyps and colon tumors, and another situation is that normal people can also have dark red stool if they eat too much coffee, chocolate, cocoa, cherry, mulberry, etc., which should be distinguished from the above diseases.

Black: Because of the tarry color on the road, it is also known as tarry stool, which is a common upper gastrointestinal bleeding stool. It includes duodenal ulcer, gastric ulcer, gastritis, mucowax prolapse, esophageal and gastric variceal bleeding in cirrhosis, etc.

However, if you eat too much meat, animal blood, liver, spinach, oral iron, bismuth, activated charcoal, etc., the feces can also be black, so you should distinguish between them. If the black stool is washed away with water, if it is bloody, it is gastrointestinal bleeding.

As the saying goes, "ten men have nine hemorrhoids". Bleeding in the stool on a daily basis, people often think of hemorrhoids and ignore the possibility of colorectal cancer. If there is bleeding in the stool, the first thing to be aware of is the possibility of cancer. This is especially important for the elderly.

Black is a sign that you're eating too much carnivorous food, and dark green is a sign you're eating too much vegetables.

Normal people eat animal blood, pig liver, kelp and other iron-rich foods can form black iron sulfide in the human intestines, and can also make the feces black, and taking bismuth, charcoal powder and some traditional Chinese medicine and other drugs can also make the feces discolored. If this is the case, it is normal and there is no need to panic.

Therefore, when you find that the stool is black, you must carefully distinguish it, neither can you see the wind or the rain, nor can you be careless. The appearance of melena is black and shiny, and with the increase of bleeding, the body may have symptoms of blood loss such as dizziness, weakness, thirst, palpitation, increased heart rate, paleness and even fainting; The "fake black stool" often has a special eating history, that is, after taking drugs that can cause black stool or eating animal blood products, the color of black stool is relatively gray, except for eating animal blood, it will rarely shine, and after stopping taking such food (medicine), "black stool" will disappear within three days, and will not be accompanied by any other uncomfortable symptoms.

Green: watery or pasty, sour, foamy, more common in indigestion, intestinal dysfunction and other diseases. If pus is mixed with green stools, it is a sign of acute enteritis or bacillary dysentery. Sudden onset of fishy-fouling, green, watery stools with grayish-white flaky translucent egg cyanoid pseudomembranes after major abdominal surgery or in patients receiving extensive antimicrobials** suggests Staphylococcus aureus enteritis.

In addition, eating a lot of chlorophyll-containing foods, or having too much acidity in the intestines, can also turn the stool green.

However, if it is a long-term black stool with green stools and constipation, it is recommended to go to the hospital for examination and early detection**.

When there is bleeding in the esophagus, stomach, duodenum, upper jejunum, and upper gastrointestinal tract such as the pancreas and biliary tract, the iron of hemoglobin in red blood cells combines with sulfide to form iron sulfide under the action of intestinal bacteria, which makes the stool appear black. This black stool is black and shiny, and its appearance is like tar, so it is also called tarry stool. Tarry stool is a manifestation of upper gastrointestinal bleeding.

If it weren't for the inclusion reasons, such as eating green vegetables and the like, there would be a lot of green vegetarian foods.

It's a bile secretion problem, a problem with the body. If this is the case for a long time, please be sure to go to the hospital for a checkup.

$19, that's it. If there is a problem, further examination will be carried out.

Good health.